Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
| 19 | #include "xfs_fs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 20 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 22 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include "xfs_trans.h" |
| 24 | #include "xfs_sb.h" |
| 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_dir2.h" |
| 27 | #include "xfs_alloc.h" |
| 28 | #include "xfs_dmapi.h" |
| 29 | #include "xfs_quota.h" |
| 30 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include "xfs_bmap_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 32 | #include "xfs_alloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "xfs_dir2_sf.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 35 | #include "xfs_attr_sf.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "xfs_dinode.h" |
| 37 | #include "xfs_inode.h" |
| 38 | #include "xfs_bmap.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 39 | #include "xfs_btree.h" |
| 40 | #include "xfs_ialloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "xfs_rtalloc.h" |
| 42 | #include "xfs_error.h" |
| 43 | #include "xfs_itable.h" |
| 44 | #include "xfs_rw.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include "xfs_attr.h" |
| 46 | #include "xfs_buf_item.h" |
| 47 | #include "xfs_trans_priv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include "xfs_qm.h" |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* |
| 51 | * returns the number of iovecs needed to log the given dquot item. |
| 52 | */ |
| 53 | /* ARGSUSED */ |
| 54 | STATIC uint |
| 55 | xfs_qm_dquot_logitem_size( |
| 56 | xfs_dq_logitem_t *logitem) |
| 57 | { |
| 58 | /* |
| 59 | * we need only two iovecs, one for the format, one for the real thing |
| 60 | */ |
| 61 | return (2); |
| 62 | } |
| 63 | |
| 64 | /* |
| 65 | * fills in the vector of log iovecs for the given dquot log item. |
| 66 | */ |
| 67 | STATIC void |
| 68 | xfs_qm_dquot_logitem_format( |
| 69 | xfs_dq_logitem_t *logitem, |
| 70 | xfs_log_iovec_t *logvec) |
| 71 | { |
| 72 | ASSERT(logitem); |
| 73 | ASSERT(logitem->qli_dquot); |
| 74 | |
| 75 | logvec->i_addr = (xfs_caddr_t)&logitem->qli_format; |
| 76 | logvec->i_len = sizeof(xfs_dq_logformat_t); |
Christoph Hellwig | 4139b3b | 2010-01-19 09:56:45 +0000 | [diff] [blame] | 77 | logvec->i_type = XLOG_REG_TYPE_QFORMAT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | logvec++; |
| 79 | logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core; |
| 80 | logvec->i_len = sizeof(xfs_disk_dquot_t); |
Christoph Hellwig | 4139b3b | 2010-01-19 09:56:45 +0000 | [diff] [blame] | 81 | logvec->i_type = XLOG_REG_TYPE_DQUOT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | ASSERT(2 == logitem->qli_item.li_desc->lid_size); |
| 84 | logitem->qli_format.qlf_size = 2; |
| 85 | |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | * Increment the pin count of the given dquot. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | */ |
| 91 | STATIC void |
| 92 | xfs_qm_dquot_logitem_pin( |
| 93 | xfs_dq_logitem_t *logitem) |
| 94 | { |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 95 | xfs_dquot_t *dqp = logitem->qli_dquot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
Peter Leckie | d1de802 | 2008-10-30 17:05:18 +1100 | [diff] [blame] | 98 | atomic_inc(&dqp->q_pincount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /* |
| 102 | * Decrement the pin count of the given dquot, and wake up |
| 103 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 104 | * dquot must have been previously pinned with a call to |
| 105 | * xfs_qm_dquot_logitem_pin(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | */ |
| 107 | /* ARGSUSED */ |
| 108 | STATIC void |
| 109 | xfs_qm_dquot_logitem_unpin( |
| 110 | xfs_dq_logitem_t *logitem, |
| 111 | int stale) |
| 112 | { |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 113 | xfs_dquot_t *dqp = logitem->qli_dquot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 115 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
| 116 | if (atomic_dec_and_test(&dqp->q_pincount)) |
| 117 | wake_up(&dqp->q_pinwait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | /* ARGSUSED */ |
| 121 | STATIC void |
| 122 | xfs_qm_dquot_logitem_unpin_remove( |
| 123 | xfs_dq_logitem_t *logitem, |
| 124 | xfs_trans_t *tp) |
| 125 | { |
| 126 | xfs_qm_dquot_logitem_unpin(logitem, 0); |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Given the logitem, this writes the corresponding dquot entry to disk |
| 131 | * asynchronously. This is called with the dquot entry securely locked; |
| 132 | * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot |
| 133 | * at the end. |
| 134 | */ |
| 135 | STATIC void |
| 136 | xfs_qm_dquot_logitem_push( |
| 137 | xfs_dq_logitem_t *logitem) |
| 138 | { |
| 139 | xfs_dquot_t *dqp; |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 140 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
| 142 | dqp = logitem->qli_dquot; |
| 143 | |
| 144 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 145 | ASSERT(!completion_done(&dqp->q_flush)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
| 147 | /* |
| 148 | * Since we were able to lock the dquot's flush lock and |
| 149 | * we found it on the AIL, the dquot must be dirty. This |
| 150 | * is because the dquot is removed from the AIL while still |
| 151 | * holding the flush lock in xfs_dqflush_done(). Thus, if |
| 152 | * we found it in the AIL and were able to obtain the flush |
| 153 | * lock without sleeping, then there must not have been |
| 154 | * anyone in the process of flushing the dquot. |
| 155 | */ |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 156 | error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI); |
| 157 | if (error) |
| 158 | xfs_fs_cmn_err(CE_WARN, dqp->q_mount, |
| 159 | "xfs_qm_dquot_logitem_push: push error %d on dqp %p", |
| 160 | error, dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | xfs_dqunlock(dqp); |
| 162 | } |
| 163 | |
| 164 | /*ARGSUSED*/ |
| 165 | STATIC xfs_lsn_t |
| 166 | xfs_qm_dquot_logitem_committed( |
| 167 | xfs_dq_logitem_t *l, |
| 168 | xfs_lsn_t lsn) |
| 169 | { |
| 170 | /* |
| 171 | * We always re-log the entire dquot when it becomes dirty, |
| 172 | * so, the latest copy _is_ the only one that matters. |
| 173 | */ |
| 174 | return (lsn); |
| 175 | } |
| 176 | |
| 177 | |
| 178 | /* |
| 179 | * This is called to wait for the given dquot to be unpinned. |
| 180 | * Most of these pin/unpin routines are plagiarized from inode code. |
| 181 | */ |
| 182 | void |
| 183 | xfs_qm_dqunpin_wait( |
| 184 | xfs_dquot_t *dqp) |
| 185 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 187 | if (atomic_read(&dqp->q_pincount) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
| 190 | /* |
| 191 | * Give the log a push so we don't wait here too long. |
| 192 | */ |
Christoph Hellwig | a14a348 | 2010-01-19 09:56:46 +0000 | [diff] [blame] | 193 | xfs_log_force(dqp->q_mount, 0); |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 194 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | /* |
| 198 | * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that |
| 199 | * the dquot is locked by us, but the flush lock isn't. So, here we are |
| 200 | * going to see if the relevant dquot buffer is incore, waiting on DELWRI. |
| 201 | * If so, we want to push it out to help us take this item off the AIL as soon |
| 202 | * as possible. |
| 203 | * |
Donald Douwsma | 287f3da | 2007-10-11 17:36:05 +1000 | [diff] [blame] | 204 | * We must not be holding the AIL lock at this point. Calling incore() to |
| 205 | * search the buffer cache can be a time consuming thing, and AIL lock is a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | * spinlock. |
| 207 | */ |
| 208 | STATIC void |
| 209 | xfs_qm_dquot_logitem_pushbuf( |
| 210 | xfs_dq_logitem_t *qip) |
| 211 | { |
| 212 | xfs_dquot_t *dqp; |
| 213 | xfs_mount_t *mp; |
| 214 | xfs_buf_t *bp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
| 216 | dqp = qip->qli_dquot; |
| 217 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
| 218 | |
| 219 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | * If flushlock isn't locked anymore, chances are that the |
| 221 | * inode flush completed and the inode was taken off the AIL. |
| 222 | * So, just get out. |
| 223 | */ |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 224 | if (completion_done(&dqp->q_flush) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | xfs_dqunlock(dqp); |
| 227 | return; |
| 228 | } |
| 229 | mp = dqp->q_mount; |
| 230 | bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno, |
Christoph Hellwig | 0cadda1 | 2010-01-19 09:56:44 +0000 | [diff] [blame] | 231 | XFS_QI_DQCHUNKLEN(mp), XBF_TRYLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | xfs_dqunlock(dqp); |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame^] | 233 | if (!bp) |
| 234 | return; |
| 235 | if (XFS_BUF_ISDELAYWRITE(bp)) |
| 236 | xfs_buf_delwri_promote(bp); |
| 237 | xfs_buf_relse(bp); |
| 238 | return; |
| 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | /* |
| 243 | * This is called to attempt to lock the dquot associated with this |
| 244 | * dquot log item. Don't sleep on the dquot lock or the flush lock. |
| 245 | * If the flush lock is already held, indicating that the dquot has |
| 246 | * been or is in the process of being flushed, then see if we can |
| 247 | * find the dquot's buffer in the buffer cache without sleeping. If |
| 248 | * we can and it is marked delayed write, then we want to send it out. |
| 249 | * We delay doing so until the push routine, though, to avoid sleeping |
| 250 | * in any device strategy routines. |
| 251 | */ |
| 252 | STATIC uint |
| 253 | xfs_qm_dquot_logitem_trylock( |
| 254 | xfs_dq_logitem_t *qip) |
| 255 | { |
| 256 | xfs_dquot_t *dqp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
| 258 | dqp = qip->qli_dquot; |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 259 | if (atomic_read(&dqp->q_pincount) > 0) |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame^] | 260 | return XFS_ITEM_PINNED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | if (! xfs_qm_dqlock_nowait(dqp)) |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame^] | 263 | return XFS_ITEM_LOCKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 265 | if (!xfs_dqflock_nowait(dqp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | /* |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame^] | 267 | * dquot has already been flushed to the backing buffer, |
| 268 | * leave it locked, pushbuf routine will unlock it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | */ |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame^] | 270 | return XFS_ITEM_PUSHBUF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL); |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame^] | 274 | return XFS_ITEM_SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | |
| 278 | /* |
| 279 | * Unlock the dquot associated with the log item. |
| 280 | * Clear the fields of the dquot and dquot log item that |
| 281 | * are specific to the current transaction. If the |
| 282 | * hold flags is set, do not unlock the dquot. |
| 283 | */ |
| 284 | STATIC void |
| 285 | xfs_qm_dquot_logitem_unlock( |
| 286 | xfs_dq_logitem_t *ql) |
| 287 | { |
| 288 | xfs_dquot_t *dqp; |
| 289 | |
| 290 | ASSERT(ql != NULL); |
| 291 | dqp = ql->qli_dquot; |
| 292 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
| 293 | |
| 294 | /* |
| 295 | * Clear the transaction pointer in the dquot |
| 296 | */ |
| 297 | dqp->q_transp = NULL; |
| 298 | |
| 299 | /* |
| 300 | * dquots are never 'held' from getting unlocked at the end of |
| 301 | * a transaction. Their locking and unlocking is hidden inside the |
| 302 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag |
| 303 | * for the logitem. |
| 304 | */ |
| 305 | xfs_dqunlock(dqp); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | * this needs to stamp an lsn into the dquot, I think. |
| 311 | * rpc's that look at user dquot's would then have to |
| 312 | * push on the dependency recorded in the dquot |
| 313 | */ |
| 314 | /* ARGSUSED */ |
| 315 | STATIC void |
| 316 | xfs_qm_dquot_logitem_committing( |
| 317 | xfs_dq_logitem_t *l, |
| 318 | xfs_lsn_t lsn) |
| 319 | { |
| 320 | return; |
| 321 | } |
| 322 | |
| 323 | |
| 324 | /* |
| 325 | * This is the ops vector for dquots |
| 326 | */ |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 327 | static struct xfs_item_ops xfs_dquot_item_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size, |
| 329 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
| 330 | xfs_qm_dquot_logitem_format, |
| 331 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin, |
| 332 | .iop_unpin = (void(*)(xfs_log_item_t*, int)) |
| 333 | xfs_qm_dquot_logitem_unpin, |
| 334 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*)) |
| 335 | xfs_qm_dquot_logitem_unpin_remove, |
| 336 | .iop_trylock = (uint(*)(xfs_log_item_t*)) |
| 337 | xfs_qm_dquot_logitem_trylock, |
| 338 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock, |
| 339 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 340 | xfs_qm_dquot_logitem_committed, |
| 341 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | .iop_pushbuf = (void(*)(xfs_log_item_t*)) |
| 343 | xfs_qm_dquot_logitem_pushbuf, |
| 344 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 345 | xfs_qm_dquot_logitem_committing |
| 346 | }; |
| 347 | |
| 348 | /* |
| 349 | * Initialize the dquot log item for a newly allocated dquot. |
| 350 | * The dquot isn't locked at this point, but it isn't on any of the lists |
| 351 | * either, so we don't care. |
| 352 | */ |
| 353 | void |
| 354 | xfs_qm_dquot_logitem_init( |
| 355 | struct xfs_dquot *dqp) |
| 356 | { |
| 357 | xfs_dq_logitem_t *lp; |
| 358 | lp = &dqp->q_logitem; |
| 359 | |
| 360 | lp->qli_item.li_type = XFS_LI_DQUOT; |
| 361 | lp->qli_item.li_ops = &xfs_dquot_item_ops; |
| 362 | lp->qli_item.li_mountp = dqp->q_mount; |
| 363 | lp->qli_dquot = dqp; |
| 364 | lp->qli_format.qlf_type = XFS_LI_DQUOT; |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 365 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
| 367 | lp->qli_format.qlf_len = 1; |
| 368 | /* |
| 369 | * This is just the offset of this dquot within its buffer |
| 370 | * (which is currently 1 FSB and probably won't change). |
| 371 | * Hence 32 bits for this offset should be just fine. |
| 372 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) |
| 373 | * here, and recompute it at recovery time. |
| 374 | */ |
| 375 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; |
| 376 | } |
| 377 | |
| 378 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ |
| 379 | |
| 380 | /* |
| 381 | * This returns the number of iovecs needed to log the given quotaoff item. |
| 382 | * We only need 1 iovec for an quotaoff item. It just logs the |
| 383 | * quotaoff_log_format structure. |
| 384 | */ |
| 385 | /*ARGSUSED*/ |
| 386 | STATIC uint |
| 387 | xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf) |
| 388 | { |
| 389 | return (1); |
| 390 | } |
| 391 | |
| 392 | /* |
| 393 | * This is called to fill in the vector of log iovecs for the |
| 394 | * given quotaoff log item. We use only 1 iovec, and we point that |
| 395 | * at the quotaoff_log_format structure embedded in the quotaoff item. |
| 396 | * It is at this point that we assert that all of the extent |
| 397 | * slots in the quotaoff item have been filled. |
| 398 | */ |
| 399 | STATIC void |
| 400 | xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t *qf, |
| 401 | xfs_log_iovec_t *log_vector) |
| 402 | { |
| 403 | ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF); |
| 404 | |
| 405 | log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format); |
| 406 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); |
Christoph Hellwig | 4139b3b | 2010-01-19 09:56:45 +0000 | [diff] [blame] | 407 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | qf->qql_format.qf_size = 1; |
| 409 | } |
| 410 | |
| 411 | |
| 412 | /* |
| 413 | * Pinning has no meaning for an quotaoff item, so just return. |
| 414 | */ |
| 415 | /*ARGSUSED*/ |
| 416 | STATIC void |
| 417 | xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf) |
| 418 | { |
| 419 | return; |
| 420 | } |
| 421 | |
| 422 | |
| 423 | /* |
| 424 | * Since pinning has no meaning for an quotaoff item, unpinning does |
| 425 | * not either. |
| 426 | */ |
| 427 | /*ARGSUSED*/ |
| 428 | STATIC void |
| 429 | xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int stale) |
| 430 | { |
| 431 | return; |
| 432 | } |
| 433 | |
| 434 | /*ARGSUSED*/ |
| 435 | STATIC void |
| 436 | xfs_qm_qoff_logitem_unpin_remove(xfs_qoff_logitem_t *qf, xfs_trans_t *tp) |
| 437 | { |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | /* |
| 442 | * Quotaoff items have no locking, so just return success. |
| 443 | */ |
| 444 | /*ARGSUSED*/ |
| 445 | STATIC uint |
| 446 | xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf) |
| 447 | { |
| 448 | return XFS_ITEM_LOCKED; |
| 449 | } |
| 450 | |
| 451 | /* |
| 452 | * Quotaoff items have no locking or pushing, so return failure |
| 453 | * so that the caller doesn't bother with us. |
| 454 | */ |
| 455 | /*ARGSUSED*/ |
| 456 | STATIC void |
| 457 | xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf) |
| 458 | { |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * The quotaoff-start-item is logged only once and cannot be moved in the log, |
| 464 | * so simply return the lsn at which it's been logged. |
| 465 | */ |
| 466 | /*ARGSUSED*/ |
| 467 | STATIC xfs_lsn_t |
| 468 | xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn) |
| 469 | { |
| 470 | return (lsn); |
| 471 | } |
| 472 | |
| 473 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | * There isn't much you can do to push on an quotaoff item. It is simply |
| 475 | * stuck waiting for the log to be flushed to disk. |
| 476 | */ |
| 477 | /*ARGSUSED*/ |
| 478 | STATIC void |
| 479 | xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf) |
| 480 | { |
| 481 | return; |
| 482 | } |
| 483 | |
| 484 | |
| 485 | /*ARGSUSED*/ |
| 486 | STATIC xfs_lsn_t |
| 487 | xfs_qm_qoffend_logitem_committed( |
| 488 | xfs_qoff_logitem_t *qfe, |
| 489 | xfs_lsn_t lsn) |
| 490 | { |
| 491 | xfs_qoff_logitem_t *qfs; |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 492 | struct xfs_ail *ailp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | qfs = qfe->qql_start_lip; |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 495 | ailp = qfs->qql_item.li_ailp; |
| 496 | spin_lock(&ailp->xa_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | /* |
| 498 | * Delete the qoff-start logitem from the AIL. |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 499 | * xfs_trans_ail_delete() drops the AIL lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | */ |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 501 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 502 | kmem_free(qfs); |
| 503 | kmem_free(qfe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | return (xfs_lsn_t)-1; |
| 505 | } |
| 506 | |
| 507 | /* |
| 508 | * XXX rcc - don't know quite what to do with this. I think we can |
| 509 | * just ignore it. The only time that isn't the case is if we allow |
| 510 | * the client to somehow see that quotas have been turned off in which |
| 511 | * we can't allow that to get back until the quotaoff hits the disk. |
| 512 | * So how would that happen? Also, do we need different routines for |
| 513 | * quotaoff start and quotaoff end? I suspect the answer is yes but |
| 514 | * to be sure, I need to look at the recovery code and see how quota off |
| 515 | * recovery is handled (do we roll forward or back or do something else). |
| 516 | * If we roll forwards or backwards, then we need two separate routines, |
| 517 | * one that does nothing and one that stamps in the lsn that matters |
| 518 | * (truly makes the quotaoff irrevocable). If we do something else, |
| 519 | * then maybe we don't need two. |
| 520 | */ |
| 521 | /* ARGSUSED */ |
| 522 | STATIC void |
| 523 | xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) |
| 524 | { |
| 525 | return; |
| 526 | } |
| 527 | |
| 528 | /* ARGSUSED */ |
| 529 | STATIC void |
| 530 | xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) |
| 531 | { |
| 532 | return; |
| 533 | } |
| 534 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 535 | static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
| 537 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
| 538 | xfs_qm_qoff_logitem_format, |
| 539 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, |
| 540 | .iop_unpin = (void(*)(xfs_log_item_t* ,int)) |
| 541 | xfs_qm_qoff_logitem_unpin, |
| 542 | .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*)) |
| 543 | xfs_qm_qoff_logitem_unpin_remove, |
| 544 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, |
| 545 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, |
| 546 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 547 | xfs_qm_qoffend_logitem_committed, |
| 548 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | .iop_pushbuf = NULL, |
| 550 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 551 | xfs_qm_qoffend_logitem_committing |
| 552 | }; |
| 553 | |
| 554 | /* |
| 555 | * This is the ops vector shared by all quotaoff-start log items. |
| 556 | */ |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 557 | static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
| 559 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
| 560 | xfs_qm_qoff_logitem_format, |
| 561 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, |
| 562 | .iop_unpin = (void(*)(xfs_log_item_t*, int)) |
| 563 | xfs_qm_qoff_logitem_unpin, |
| 564 | .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*)) |
| 565 | xfs_qm_qoff_logitem_unpin_remove, |
| 566 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, |
| 567 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, |
| 568 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 569 | xfs_qm_qoff_logitem_committed, |
| 570 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | .iop_pushbuf = NULL, |
| 572 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 573 | xfs_qm_qoff_logitem_committing |
| 574 | }; |
| 575 | |
| 576 | /* |
| 577 | * Allocate and initialize an quotaoff item of the correct quota type(s). |
| 578 | */ |
| 579 | xfs_qoff_logitem_t * |
| 580 | xfs_qm_qoff_logitem_init( |
| 581 | struct xfs_mount *mp, |
| 582 | xfs_qoff_logitem_t *start, |
| 583 | uint flags) |
| 584 | { |
| 585 | xfs_qoff_logitem_t *qf; |
| 586 | |
| 587 | qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP); |
| 588 | |
| 589 | qf->qql_item.li_type = XFS_LI_QUOTAOFF; |
| 590 | if (start) |
| 591 | qf->qql_item.li_ops = &xfs_qm_qoffend_logitem_ops; |
| 592 | else |
| 593 | qf->qql_item.li_ops = &xfs_qm_qoff_logitem_ops; |
| 594 | qf->qql_item.li_mountp = mp; |
| 595 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; |
| 596 | qf->qql_format.qf_flags = flags; |
| 597 | qf->qql_start_lip = start; |
| 598 | return (qf); |
| 599 | } |